378659441 has 4 divisors (see below), whose sum is σ = 380230884. Its totient is φ = 377088000.

The previous prime is 378659399. The next prime is 378659447. The reversal of 378659441 is 144956873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198697216 + 179962225 = 14096^2 + 13415^2 .

It is a cyclic number.

It is not a de Polignac number, because 378659441 - 2¹⁰ = 378658417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378659447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785360 + ... + 785841.

It is an arithmetic number, because the mean of its divisors is an integer number (95057721).

Almost surely, 2^378659441 is an apocalyptic number.

It is an amenable number.

378659441 is a deficient number, since it is larger than the sum of its proper divisors (1571443).

378659441 is a wasteful number, since it uses less digits than its factorization.

378659441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571442.

The product of its digits is 725760, while the sum is 47.

The square root of 378659441 is about 19459.1736977704. The cubic root of 378659441 is about 723.4628970532.

The spelling of 378659441 in words is "three hundred seventy-eight million, six hundred fifty-nine thousand, four hundred forty-one".